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' r P. F. HAGGENMULLER LITHOGRAPHIG PLATE.

' No. 487,121. Patented Nqv. 29 1892.

WITNESSES! A N INVENTOYH n m ATTORNEYS.

m: Now": PETERS on, PHOTCFLITNOJWASHIRMON, u. c.

UNITED STATES PATENT OFFICE.

FRANKLIN F. HAGGENMULLER, OF NEW YORK, N. Y.

LITHOG RAPHIC PLATE.

SPECIFICATION forming part of Letters Patent No. 487,121, dated November29, 18912.

' Application filed June 27, 1892. Seria1N0.438,206. No model.)

T0 or. whom it may concern.-

Be it known that I, FRANKLIN F. l-IAGGEN- MULLER, of the city, county,and State of New York, have invented a new and Improved Printing-Plate,of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improvedprinting-plate, which is chiefly intended to take the place of thelithographic stone now generally used, the said plate being simple anddurable in construction, very cheaply manufactured, and provided with astipple ready for the artist to work on.

The invention consists of a plate provided with an embossed lithographicstipple.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure l is a plan view of theimprovement. Fig. 2 is an enlarged planview of part of the same, and Fig. 3 is a sectional side elevation ofthe same on the line 3 3 of Fig. 2.

The improved printing-plate is made of zinc, typemetal, aluminum, orother metal,

and can be made of celluloid, gelatine, glass,

and other substances. The plate is made of suitable thickness and issubjected to an embossing process, so as to form on one side of theplate a printing-stipple ready for the artist to work on. Thisprinting-stipple is uniform and can be readily worked on with thelithographic crayon to produce the desired picture.

As shown in the drawings, the plate A is formed on one side with astipple B, made of spherical points; but I do not limit myself to theparticular shape of the points forming the stipple. It is understoodthat the material of which the plate is formed must be of such a naturethat it can be printed from, can be drawn on or photographed upon, asrequired, for ordinary printing, and subjected to acids and othersubstances used in preparing the plate in a manner similar to that ofthe lithographic stone after the picture is formed, so as to get theplate ready for printing. It is further understood that a plate embossedin such a manner as to form a lithographic stipple prepares the plateready for the artist to draw on without the tedious process of stipplingclot by dot on the stone, as heretofore practiced.

It will be seen thata plate produced in this cheap and effective mannercan readily be substituted for the zinc plates or expensive stone nowgenerally used in the art of lithography.

It is further understood that after the pictures have been printed fromthe plate the latter can be melted up and again formed into plates andembossed, so as to form a stipple,in the manner above described. Thusthe same material can be used over and over again for forminglithographic plates of the nature described.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- The improved plate for use in practicalprinting, the same having an embossed stippled surface, as shown anddescribed.

FRANKLIN F. HAGGENMULLER. Witnesses:

THEO. G. HOSTER, EDGAR TATE.

